Science: Carbon Monoxide

Safety First campaigns and horrible examples have informed all except those who will not learn that one of the products of imperfect combustion in the cylinders of a gasoline engine is carbon monoxide, a gas toxic and often fatal—in sufficient concentration—to human beings. Engines running in closed garages have been the cause of a rapidly increasing death list in recent years. The building of large vehicular tunnels, which are difficult to ventilate, has multiplied the danger. Only a fortnight ago, in the new Liberty Tunnels, Pittsburgh (TIME, Feb. 4), many persons...

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